So tldr: I'm good at approach and starting some attraction. But I am naturally a fairly quiet person, sometimes other more talkative guys are able to swoop in and carry the conversation while I'm left standing there.

I'm pretty good in one on one settings, or small group settings where I'm the only one hitting on the girl or no one is hitting on each other, my main contribution to convos are jokes/comments relating to what the other person says.

Obviously not all girls are attracted to me, but I can tell when one is, problem is since I'm quiet I don't know how to deal with another more talkative guy who can talk to a wall coming in. Often times this happens in a situation where the girl likes me and things are going the right way but haven't progressed enough for me to call her "my girl" yet and have the dude back off.